A Theoretical and Experimental Study of Transient Flow-Surges and Low-Frequency Flow Instabilities in Parallel-Tube Condensing Flow Systems

9420853 摘要 该建议旨在使用实验和建模的瞬态流动不稳定性在完全冷凝的两个平行管传热系统作为理解这些不稳定性在更复杂的系统的第一步。 现有的实验设备将被用来测量这些不稳定性，和一个模型的基础上的一个单一的等效管的行为将被用来关联的双管系统的行为。这项工作旨在深入了解不稳定流动系统的复杂行为，并可能在发生这种行为的大型设备，如发电厂和化学加工工业冷凝器中具有重要的应用。

9420853 ABSTRACT This proposal seeks to use experiment and modeling of transient flow instabilities in fully condensing two-parallel-tube heat transfer systems as a first step in understanding these instabilities in more complex systems. Existing experimental equipment will be used to measure these instabilities, and a model based on the behavior of a single equivalent tube will be used to correlate the behavior of the two-tube system. The work seeks to provide insight into the complex behavior of unstable flow systems, and may have important applications in large-scale equipment such as power plant and chemical process industry condensers where such behavior occurs.